Don't try to EXPUNGE in READ-ONLY mode. (imap4_sync_changes): Don't check

Don't try to EXPUNGE in READ-ONLY mode. (imap4_sync_changes): Don't check

2005-03-11  Jeffrey Stedfast  <fejj@novell.com>

	* camel-imap4-folder.c (imap4_sync): Don't try to EXPUNGE in
	READ-ONLY mode.
	(imap4_sync_changes): Don't check permanent_flags here.
	(imap4_sync): Check permanent_flags here instead and don't bother
	wasting cycles if permanent_flags is empty.
	(imap4_sync): Don't attempt to EXPUNGE if the folder is READ-ONLY.
	(imap4_append_message): Set an exception if the folder is
	read-only and don't bother trying to append.

	* camel-imap4-engine.c (camel_imap4_engine_select_folder): Set the
	READ-ONLY bit on the folder if the server says we've opened it in
	READ-ONLY mode.